How do you solve these two equations? Urgent!!

Hello! 27=4x²

2x=√27

2x=3√3

x=（3√3）/2

3（x-5)²=2(5-x)

x-5)(3x-15+10-2x)=0

x-5)(x-5)=0

x-5=0x1=x2=5

This kind of problem is generally easier to use the factorization method.

Added: 100-75x+2x=0

2x^2-75x+100=0

x^2-75x/2+50=0

x^2-2*(75/4)*x+(75/4)^2=-50+(75/4)^2

x-75/4)^2=4825/16

x-75/4=±5√193/4

x1=(75+5√193)/4

x2=(75-5√193)/4

1.x = 27 4 x = plus or minus 3 root number under 3 22Let t=x-5

The original equation is 3t +2t=0 t(3t+2)=0 to get t=0, t=-2 3

So x-5 = 0 or x-5 = -2 3

x=5,x=5-2/3

1.+ or 3/2 times the root number 3

2.No.

Method: Substitute x=100-y into the second equation and solve y

Then substitute the value of y into x+y=100, and solve x.

Multiply the above equation by 50 respectively around the equal sign, and then subtract the following equation to get 20x=1500, x=75, and substitute it into the above formula, y=25

Divide the original by 10 at the same time.

y=25x=75

Answer: x+y=100

30x+50y=3500

So: 3x+3y=300

3x+5y=350

Subtract the two formulas: 2y=50

Solution: y=25

So: x=100-y=75

The solution of the system of equations is:

x=75，y=25

x+y=100 (1) (40)-(3) gives 2x=150 x=75

30x+50y=3500 (2)

2) Simplification yields 3x+5y=350 (3).

1) Multiply each item by 5 to get 5x+5y=500 (4) (1) Multiply each by 5 to get 5x+5y=500 (4).

Let's simplify the left side first: So x=1

First remove the parentheses, 200+2x=300, then move the terms, 2x=300-200, 2x=100, coefficients 1, x 50

8224-x=x/

8224*1

Transposition; X+ Merge; Divide both sides at the same time; x=

x=4224

Hope it helps.

Since (x-m) = (m-x) and y=-x+m=m-x, the original equation can be reduced to .

y=-y²+2

y²+y=2

According to (a+b) = a +2ab+b, y +y+ is obtained

y+y+y=1 or y=-2

Substituting y=1 into y=m-x yields.

x=m-1 substituting y=-2 into y=m-x.

x=m+2

Remove the parentheses, 2y-6-6-3y=0

Combining similar terms yields 2y-3y-6-6=0

and -y-12=0

Shift, y=12

The coefficient is 1, and y = -12

x-7x 9=2x 9=5 15=1 with 3 acres cultivated by the forest 3 with x=3 2

x+3x/4=7x/4=140

So macro excitation x=80